Balance



(No ModeL) 2 sheets-swat 1.

W. T. REASBR. r BALANCED SLIDE VALVE.

Patented Sept. 5, 1882.

WITNESSES (No Model. 2 Shetsz-Sheet 2. e W. TREASER. V

BALANOEP SLIDE VALVE.

No. 263,809. Patented Sept. 5. 1882.-

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PATENT OFFICE.

WARREN T. REASER, OF MADISON, WISCONSIN.

BALANCED SLIDE-VALVE.

QPECIFICATION forming part of Letters Patent No. 263,809, datedSeptember 5, 1882.

Application filed January 14, 1882. (No model.)

To an whom tt may concern:

Be it known that I, WARREN T. REASER, a citizenof the United States,residing at Madison, in the county of. Dane and State of Wisconsin, haveinvented certain new and useful Improvements in Balanced Slide-Valves;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters or figures of referencemarked thereon, which form a part of this specification. I

This invention relates to certain new and useful improvements in meansespecially designed for lessening or removing the friction between aslide-valve and its 'scat, resulting from the downward pressure uponsuch valves of steam or other fluids, or to complete a more perfect andcomplete balanced slide-valve? and to this end the invention consists inthe novel features of construction and combination and arrangement ofparts, all as will be hereinafter fully described, and specificallydesignated in the claims.

Referring to the accompanying drawings,

Figurelrepresents avertical and longitudinal section of a cylinder,steam chest, and valve of a steam-engineembodying oneof myessentialimprovements; Fig. 2, a vertical and transverse central sectionof the same. Fig.3is a side elevation, partly in section. Fig. 4 is avertical longitudinal section.

In the drawings, A represents the cylinder, B the steam-chest, O thevalve seat or seats, and D the slide valve or valves, of a steamengine.

E-represents a bail or yoke having short 0 journals 0 e, restingorfitting in bearings ff,

arranged in the bottom wall of the central part, F, of the valve-seat G.This bail or yoke is provided on its upper face with sectoral plates orrocking bearin gs G G, which are arranged to fit in the exhaust-port dof the valve D, and thereby support the valve, the upper interior wallof said exhaust-port resting on .said plates or rockers G G, and whichwall is flat or horizontal, so that the valve always moves on a straighthorizontal line, with the bearing-points of the plates or rockers,therefore, always on a vertical line with the fulcrum of the bail oryoke in whatever position the valve may occupy in its forward and'backward or reciprocating movement, said bail 0r yoke being ofsufficient height as toraise the valve off its seat, or at least as muchas is necessary to avoid friction.

In order to always insureof theproper working of the plates or rockers GG as the valve is moved forward and backward, or in reference to themovement of the valve, the bail or yoke is provided with a series ofcog-teeth, g, on its upper face and at the center thereof, which meshwith a similar set of cog-teeth,g, formed in the upper interior wall ofthe exhaust-port ot' the valve.

The above-described constrnction,while securing a uniform movement ofthe valve and its supporting bail or yoke, also sustains the valve inits proper position relative to the valve-seat. ends by bails or yokes HH, having the journals h, supported in bearings it. These bails or yokesare also provided with rockers or sectoral plates I I, upon which resthorizontal bars 5 i, connected by a crossbar, J, secured to verticalsupports j j, projecting from the top of the valve D, all as clearlyshown in Fig. 3.

These bails or yokes H H are provided with cog-teeth h which mesh withcog-teeth k on the projecting ends of a rod, K, secured to the valve,(and which may form the rod for oper-' ating the valve,) so that thebails or yokes will .be moved uniformly with the valve, similar to themovement and for the same purpose as the cog-teeth of the bail or yokeEand the valve D. In Fig. 4 I have shown the bails and yokes applied to adouble valve or two valves, L L. These valves are provided withcross-bars ll, connected at their ends by horizontal bars M M, whichrest on the rockers or sectoral plates m m of the bails or yokes N N,having their journals n 12 supported in bearings n a. y The cross-bars ZZ are provided with outwardlyprojectingbars l 1, having cog-teeth 0,adapted to mesh with cog-teeth 0 on the bails or yokes N N, which insureof their being moved uniformly with the valves in a similar manner tothe bails or yokes H H and E. The cog-teeth as arranged with relation tothe bails or yokes and the valve or valves insure the proper re- Thevalve is also supported atits lationship of the same and the sectoralplates or rockers.

By the hereinbefore-described devices for supporting the valve or valveseconomy in expenditure of power necessary to drive the valve or valvesis obtained, while lessening to deemed unnecessary to further elaborateupon them.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination, with a valve-seat and a sliding valve,,of interiorand exterior rocking bearings for supporting said valve, substantiallyin the manner as and for the purpose specified. a

2. The combination, with the valve and valve-seat, of a bail or yokesupported in bearin gs formed in the port F, and havingsectoral 'platesor rockers upon which the upper wall of the exhaust-port d of the valverests, and thereby supporting the valve, substantially in the manner asand for the purpose herein shown and described.

3. The combination, with the valve-seat and valve having cog-teethformed in the upper wall of the exhaust-port d, of a bail or yokejournaled in the port F, and having cog-teeth and sectoral plates orrockers, substantially in the manner as and for the purposeherein shownand described.

In testimony whereof I affix my signature in presence of two witnesses.

WARREN T. REASER Witnesses:

E. A. HAYES, R. M. BISHFORD.

